So we turned to Alexa Mullane for her suggestions on the best B12 supplements to buy and how to ... “I like B12 injections as you know that all of the vitamin is getting into the body and ...

However, with severe vitamin B12 deficiency or absorption issues, healthcare professionals may recommend an intramuscular injection rather than an oral supplement. As with any supplement ...

B12 shots can have mild side effects like diarrhea and swelling at the injection site. Vitamin B12 injections are an effective way to treat a deficiency, but they're not for everyone. In fact ...

You cannot overdose on vitamin B12 because any excess you simply pee out. If you get b12 shots, you may experience side effects like dizziness, nausea, and fatigue. It is possible to have elevated ...